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Demystifying the Hypercomplex: Inductive biases in hypercomplex deep learning

delete2024-05-01
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PRE
AI
D
Danilo Comminiello *
E
Eleonora Grassucci
D
Danilo P. Mandic
A
Aurelio Uncini
DOI:10.1109/MSP.2024.3401622delete
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Abstract

Abstract

En 中文
Hypercomplex algebras have recently been gaining prominence in the field of deep learning owing to the advantages of their division algebras over real vector spaces and their superior results when dealing with multidimensional signals in real-world 3D and 4D paradigms. This article provides a foundational framework that serves as a road map for understanding why hypercomplex deep learning methods are so successful and how their potential can be exploited. Such a theoretical framework is described in terms of inductive bias, i.e., a collection of assumptions, properties, and constraints that are built into training algorithms to guide their learning process toward more efficient and accurate solutions. We show that it is possible to derive specific inductive biases in the hypercomplex domains, which extend complex numbers to encompass diverse numbers and data structures. These biases prove effective in managing the distinctive properties of these domains as well as the complex structures of multidimensional and multimodal signals. This novel perspective for hypercomplex deep learning promises to both demystify this class of methods and clarify their potential, under a unifying framework, and in this way, promotes hypercomplex models as viable alternatives to traditional real-valued deep learning for multidimensional signal processing.
Keywords:
Deep learning
Training data
Multidimensional signal processing
Three-dimensional displays
Algebra
Image processing
Hypercomplex

Journal

IEEE Signal Processing Magazine cover
IEEE Signal Processing Magazine
IF:
9.6
Papers:
1.1W
Citations:
1.7W

Organization

I
Imperial College London
Scholars:
8.3W
Papers: 7.3W
Citations: 11.1W
S
sapienza university rome
Scholars:
6.3W
Papers: 4.7W
Citations: 381